Bitworld version 0.7.0 is now available for download at:
  http://sourceforge.net/projects/bitworld/files/Bitworld/bitworld-0.7.0/

We recommend that everybody running prior versions of bitworldd/Bitworld-Qt
upgrade to this release, except for users running Mac OSX 10.5.

Please report bugs using the issue tracker at github:
  https://github.com/bitworld/bitworld/issues

Project source code is hosted at github; you can get
source-only tarballs/zipballs directly from there:
  https://github.com/bitworld/bitworld/tarball/v0.7.0  # .tar.gz
  https://github.com/bitworld/bitworld/zipball/v0.7.0  # .zip

Ubuntu Linux users can use the "Personal Package Archive" (PPA)
maintained by Matt Corallo to automatically keep 
bitworld up-to-date.  Just type
  sudo apt-add-repository ppa:bitworld/bitworld
  sudo apt-get update
in your terminal, then install the bitworld-qt package:
  sudo apt-get install bitworld-qt


How to Upgrade

If you are running an older version, shut it down. Wait
until it has completely shut down (which might take a few minutes for older
versions), then run the installer (on Windows) or just copy over
Code:
/Applications/Bitworld-Qt
(on Mac) or
Code:
bitworldd/bitworld-qt
(on Linux).

If you were running on Linux with a version that might have been compiled
with a different version of Berkeley DB (for example, if you were using the
PPA and are switching to the binary release), then run the old version again
with the -detachdb argument and shut it down; if you do not, then the new
version will not be able to read the database files and will exit with an error.

Incompatible Changes

* Replaced the 'getmemorypool' RPC command with 'getblocktemplate/submitblock'
  and 'getrawmempool' commands.
* Remove deprecated RPC 'getblocknumber'

Bitworld Improvement Proposals implemented

BIP 22 - 'getblocktemplate', 'submitblock' RPCs
BIP 34 - block version 2, height in coinbase
BIP 35 - 'mempool' message, extended 'getdata' message behavior


Core bitworld handling and blockchain database

* Reduced CPU usage, by eliminating some redundant hash calculations
* Cache signature verifications, to eliminate redundant signature checks
* Transactions with zero-value outputs are considered non-standard
* Mining: when creating new blocks, sort 'paid' area by fee-per-kb
* Database: better validation of on-disk stored data
* Database: minor optimizations and reliability improvements
* -loadblock=FILE will import an external block file
* Additional DoS (denial-of-service) prevention measures
* New blockchain checkpoint at block 193,000


JSON-RPC API

* Internal HTTP server is now thread-per-connection, rather than
  a single-threaded queue that would stall on network I/O.
* Internal HTTP server supports HTTP/1.1, pipelined requests and
  connection keep-alive.
* Support JSON-RPC 2.0 batches, to encapsulate multiple JSON-RPC requests
  within a single HTTP request.
* IPv6 support
* Added raw transaction API.  See https://gist.github.com/2839617
* Added 'getrawmempool', to list contents of TX memory pool
* Added 'getpeerinfo', to list data about each connected network peer
* Added 'listaddressgroupings' for better coin control
* Rework getblock call.
* Remove deprecated RPC 'getblocknumber'
* Remove superceded RPC 'getmemorypool' (see BIP 22, above)
* listtransactions output now displays "smart" times for transactions,
  and 'blocktime' and 'timereceived' fields were added


P2P networking

* IPv6 support
* Tor hidden service support (see doc/Tor.txt)
* Attempts to fix "stuck blockchain download" problems
* Replace BDB database "addr.dat" with internally-managed "peers.dat"
  file containing peer address data.
* Lower default send buffer from 10MB to 1MB
* proxy: SOCKS5 by default
* Support connecting by hostnames passed to proxy
* Add -seednode connections, and use this instead of DNS seeds when proxied
* Added -externalip and -discover
* Add -onlynet to connect only to a given network (IPv4, IPv6, or Tor)
* Separate listening sockets, -bind=<addr>


Qt GUI

* Add UI RPC console / debug window
* Re-Enable URI handling on Windows, add safety checks and tray-notifications
* Harmonize the use of ellipsis ("...") to be used in menus, but not on buttons
* Add 2 labels to the overviewpage that display Wallet and Transaction status (obsolete or current)
* Extend the optionsdialog (e.g. language selection) and re-work it to a tabbed UI
* Merge sign/verify message into a single window with tabbed UI
* Ensure a changed bitworld unit immediately updates all GUI elements that use units
* Update QR Code dialog
* Improve error reporting at startup
* Fine-grained UI updates for a much smoother UI during block downloads
* Remove autocorrection of 0/i in addresses in UI
* Reorganize tray icon menu into more logical order
* Persistently poll for balance change when number of blocks changed
* Much better translations
* Override progress bar design on platforms with segmented progress bars to assist with readability
* Added 'immature balance' display on the overview page
* (Windows only): enable ASLR and DEP for bitworld-qt.exe
* (Windows only): add meta-data to bitworld-qt.exe (e.g. description)

Internal codebase

* Additional unit tests
* Compile warning fixes


Miscellaneous

* Reopen debug.log upon SIGHUP
* Bash programmable completion for bitworldd(1)
* On supported OS's, each thread is given a useful name


Thanks to everybody who contributed to this release:

Chris Moore
Christian von Roques
David Joel Schwartz
Douglas Huff
Fordy
Gavin Andresen
Giel van Schijndel
Gregory Maxwell
Jeff Garzik
Luke Dashjr
Matt Corallo
Michael Ford
Michael Hendricks
Peter Todd
Philip Kaufmann
Pieter Wuille
R E Broadley
Ricardo M. Correia
Rune K. Svendsen
Scott Ellis
Stephane Glondu
Wladimir J. van der Laan
cardpuncher
coderrr
fanquake
grimd34th
sje397
xanatos

Thanks to Sergio Lerner for reporting denial-of-service vulnerabilities fixed in this release.
